Hydrangea macrophylla ‘Blauer Zwerg’ is very floriferous and one of the best blue mopheads, – feed with aluminium sulphate. A good upright form.
Inflorescence: Mophead, 180mm across. The inflorescences are not overly large, so the stems are strong enough to hold them upright without staking.
synonyms: H. m. ‘Clara’, ‘Lavblaa’, ‘Lavbla’, ‘Lavblau’, ‘Blau Haller’.
‘Blauer Zwerg’ translates to ‘Blue Dwarf’.
Bred by August Steiniger, Germany, in 1965.
Zones: 6 to 9
Size: Medium (to 1.25m).
Color in neutral soil:
Color in acidic soil with AI present:
Ray florets: 4 sepals, entire, rounded, overlapping, 65mm diam.
Leaves: Simple, opposite and deciduous. Dark green. Broadly ovate to broadly elliptic. Margin: serrate. Apex: apiculate. Base: attenuate. Venation pattern: pinnate. Texture of adaxial and abaxial surfaces: smooth, glabrous, glossy. 140mm l x 100mm w.